KR20110025676A - Fungicidal composition and method for controlling plant diseases - Google Patents

Abstract

[식 중, A가 -N=인 경우, B는 -CX⁴=이고; A가 -CH=인 경우, B는 -N=이고; X¹ 및 X²는 각각 독립적으로 할로겐 원자, 알콕시기, 수산기, 알킬기, CF₃기 또는 알킬티오기이고; X³은 수소 원자, 할로겐 원자, 알콕시기, 알킬기, CF₃기 또는 알킬티오기이고; X⁴는 수소 원자, 할로겐 원자, 알콕시기, 알킬기, CF₃기 또는 알킬티오기이고; R¹은 알킬기이고; R^2'은 알콕시기이고; p는 0, 1 또는 2이고; R^2'' 및 R^2'''은 각각 알콕시기임]The present invention provides fungicide compositions having a stable and high fungicidal effect on cultivated crops infected with plant diseases caused by plant pathogens.
The fungicide composition of the present invention is characterized by containing (a) a benzoylpyridine derivative represented by the formula (I) or a salt thereof and (b) at least one other fungicide as an active ingredient.
<Formula I>

[Wherein A is -N =, B is -CX ⁴ =; When A is -CH =, B is -N =; X ¹ and X ² are each independently a halogen atom, an alkoxy group, a hydroxyl group, an alkyl group, a CF ₃ group or an alkylthio group; X ³ is a hydrogen atom, a halogen atom, an alkoxy group, an alkyl group, a CF ₃ group or an alkylthio group; X ⁴ is a hydrogen atom, a halogen atom, an alkoxy group, an alkyl group, a CF ₃ group or an alkylthio group; R ¹ is an alkyl group; R ^{2 '} is an alkoxy group; p is 0, 1 or 2; R ^{2 ''} and R ^{2 '''} are each an alkoxy group]

Description

Fungicide composition and plant disease control method {FUNGICIDAL COMPOSITION AND METHOD FOR CONTROLLING PLANT DISEASES}

The present invention relates to fungicide compositions useful as agricultural and horticultural fungicides which have significantly improved the effects of preventing and / or treating plant diseases, and a method for controlling plant diseases using the composition.

Patent Document 1 discloses that a benzoylpyridine derivative, which is an active ingredient of the fungicide composition of the present invention, is useful as a fungicide, and there is a description that combination with other fungicides is possible if necessary. In addition, Patent Document 2 describes that a fungicide composition having a remarkably excellent synergistic effect is obtained by use with other fungicides. However, it is not known that compositions of certain combinations of the present invention have significantly superior fungicidal effects.

International publication WO 02/02527 International publication WO 2005/041663

The benzoylpyridine derivative represented by the formula (I) to be described later is a plant in a specific application scene because its effect is not sufficient for a particular plant disease in its plant disease control effect, or its residual activity is relatively short or its rain resistance is weak. In practice, there may be only insufficient control effects against the disease.

The present inventors have studied to solve the above problems, and as a result, when using a benzoylpyridine derivative represented by the following formula (I) and a specific fungicide in combination, compared to the case of using each compound alone, the unexpected fungicidal effect The knowledge was obtained that the present invention was completed, and this invention was completed.

That is, the present invention provides a composition comprising (a) a benzoylpyridine derivative represented by formula (I) or a salt thereof, and (b) pyraclostrobin, boscalid, penthiopyrad, pyribencarb, meptyldinocap, difenoconazol, dodine, At least one fungicide selected from the group consisting of sulfur, flutianil, 6-t-butyl-8-fluoro-2,3-dimethylquinolin-4-yl acetate and a compound represented by formula (II) is an active ingredient It relates to a fungicide composition characterized in that it contains as.

<Formula I>

[Wherein A is -N =, B is -CX ⁴ =; When A is -CH =, B is -N =; X ¹ and X ² are each independently a halogen atom, an alkoxy group, a hydroxyl group, an alkyl group, a CF ₃ group or an alkylthio group; X ³ is a hydrogen atom, a halogen atom, an alkoxy group, an alkyl group, a CF ₃ group or an alkylthio group; X ⁴ is a hydrogen atom, a halogen atom, an alkoxy group, an alkyl group, a CF ₃ group or an alkylthio group; R ¹ is an alkyl group; R ^{2 '} is an alkoxy group; p is 0, 1 or 2; R ^{2 ''} and R ^{2 '''} are each an alkoxy group]

<Formula II>

The present invention also relates to a method for controlling plant diseases, comprising applying the fungicide composition to a plant.

As the halogen atom in the formula (I), fluorine, chlorine, bromine and iodine are used, and for example, fluorine, chlorine and bromine are used.

As the alkyl group in the formula (I), the alkyl portion of an alkoxy group, an alkylthio group, and C _{1 -6} alkyl (e.g. methyl, ethyl, propyl, isopropyl, butyl, isobutyl, t- butyl and the like) are preferred, particularly C the _1-4 alkyl is preferred.

Benzoylpyridine derivatives represented by formula (I) can form salts with acidic materials, for example inorganic salts such as hydrochloride, hydrobromide, phosphate, sulfate or nitrate; Organic acid salts such as acetates, benzoates, p-toluenesulfonates, methanesulfonates or propanesulfonates.

The benzoylpyridine derivative represented by general formula (I) can be obtained by the manufacturing method disclosed in the said patent document 1 and patent document 2. See also Journal of Organic Chemistry., 58, 7832 (1993); And European Journal of Organic Chemistry., 7, 1371-1376 (2001).

As a fungicide of (b) combined with the benzoylpyridine derivative represented by the above formula (I) or a salt thereof, pyraclostrobin, Boscalid, Penthiopyrad, Pyribencarb ), Meptyldinocap, Difenoconazole, Dodine, Sulfur, Flutianil, 6-t-butyl-8-fluoro-2,3-dimethylquinoline And at least one fungicide selected from the group consisting of -4-yl acetate and a compound represented by the formula (II).

<Formula II>

Pyraclostrobin, the fungicide of (b), is a compound described in The Pesticide Manual (14th edition; BRITISH CROP PROTECTION COUNCIL) pages 900-901. Boscalid is a compound described in The Pesticide Manual (14th edition; BRITISH CROP PROTECTION COUNCIL, page 110). Penthiopyrad is the compound described in The Pesticide Manual (14th edition; BRITISH CROP PROTECTION COUNCIL, page 811). Pyribencarb is a compound described in AG CHEM NEW COMPOUND REVIEW, VOLUME 25, page 58, 2007. The meptyldinocap is a compound described in The Pesticide Manual (14th edition; pages 356 to 358 of BRITISH CROP PROTECTION COUNCIL). Diphenoconazole is a compound described in The Pesticide Manual (14th edition; pages 323-325 of BRITISH CROP PROTECTION COUNCIL). Dodin is a compound described in The Pesticide Manual (14th edition; BRITISH CROP PROTECTION COUNCIL) pages 381-382. Sulfur is a compound described in The Pesticide Manual (14th edition; pages 978 to 979) of BRITISH CROP PROTECTION COUNCIL. Flutianil is a compound that is tentatively registered as ISO 1750, and its CAS No. is 958647-10-4. 6-t-butyl-8-fluoro-2,3-dimethylquinolin-4-yl acetate is described in Table 1 of WO 98/55460. 4-quinolinol derivatives described as 84. In addition, the compound of formula (II) is described in AG CHEM NEW COMPOUND REVIEW, VOLUME 25, page 14, 2007. It is the compound described as 214706-53-3.

The fungicide composition of the present invention has a stable and high fungicidal effect on cultivated crops infected with plant diseases, and the composition can be used to control plant diseases.

The benzoylpyridine derivative represented by Formula (I) includes a compound in which A is -CH = and B is -N =, that is, a compound represented by Formula (I-1), A is -N =, and B is -CX ⁴ = And compounds represented by the formula (I-2).

<Formula I-1>

[X ¹ , X ² , X ³ , R ¹ , R ^{2 '} , R ^2'' and R ^2''' are as described above]

<Formula I-2>

[X ¹ , X ² , X ³ , X ⁴ , R ¹ , R ^{2 '} , R ^2'' and R ^2''' are as described above]

Among the compounds represented by the formula (I-1), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -4-bromo-5-chloro-2-methoxypyridine (Compound No. 1) , 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-chloro-4-ethyl-2-methoxypyridine (Compound No. 2), 3- (4,5-dimethoxy- 2-methylbenzoyl) -4,5-dichloro-2-methoxypyridine (Compound No. 3), 3- (5-ethoxy-4-methoxy-2-methylbenzoyl) -4,5-dichloro-2 -Methoxypyridine (Compound No. 4), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -4-bromo-5-chloro-2-ethoxypyridine (Compound No. 5) , 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-chloro-2-ethoxy-4-methylpyridine (Compound No. 6), 3- (2,3,4-tri Methoxy-6-methylbenzoyl) -5-bromo-4-chloro-2-ethoxypyridine (Compound No. 7), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -4 -Chloro-5-iodo-2-methoxypyridine (Compound No. 8), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-iodo-2,4-dimethoxy Pyridine (Compound No. 9), 3- (2,3, 4-trimethoxy-6-methylbenzoyl) -5-chloro-2-methoxy-4-methylthiopyridine (Compound No. 10), 3- (2,3,4-trimethoxy-6-methylbenzoyl ) -5-chloro-2,4-dimethoxypyridine (Compound No. 11), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -4,5-dibromo-2-meth Toxypyridine (Compound No. 12), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -4-bromo-2-methoxy-5-methylpyridine (Compound No. 13), 3 -(2,3,4-trimethoxy-6-methylbenzoyl) -5-bromo-4-trifluoromethyl-2-methoxypyridine (Compound No. 14), 3- (2,3,4 -Trimethoxy-6-methylbenzoyl) -4,5-dichloro-2-methoxypyridine (Compound No. 15), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -2, 4-dichloro-5-methylpyridine (Compound No. 16), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -2,4-dichloro-5-iodopyridine (Compound No. 17 ), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -2-fluoro-4-iodo-5-methylpyridine (Compound No. 18), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -2-fluoro-4,5-dimethylpyridine (Compound No. 19), 3- (2,3,4-tri Methoxy-6-methylbenzoyl) -2-methoxy-4,5-dimethylpyridine (Compound No. 20), 3- (2-ethoxy-3,4-dimethoxy-6-methylbenzoyl) -2- Ethoxy-4,5-dimethylpyridine (Compound No. 21), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -4,5-dimethyl-2-methylthiopyridine (Compound No. 22), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-bromo-4-chloro-2-methoxypyridine (Compound No. 23), 3- (2,3, 4-trimethoxy-6-methylbenzoyl) -4-chloro-2-methoxy-5-methylpyridine (Compound No. 24), 3- (2,3,4-trimethoxy-6-methylbenzoyl) 2-Chloro-5-trifluoromethyl-4-methylpyridine (Compound No. 25), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-trifluoromethyl-2 -Methoxy-4-methylpyridine (Compound No. 26), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -2,4-dichloro-5-trifluoromethylpyridine (Compound No. 27), 3- (2,3,4-trimethock Cy-6-methylbenzoyl) -4-chloro-5-trifluoromethyl-2-methoxypyridine (Compound No. 28), 3- (2,3,4-trimethoxy-6-methylbenzoyl)- 5-Chloro-4-ethynyl-2-methoxypyridine (Compound No. 29), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-chloro-4-fluoromethyl- 2-methoxypyridine (Compound No. 30), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-bromo-4-fluoromethyl-2-methoxypyridine (Compound No. 31), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -4-fluoromethyl-2-methoxy-5-methylpyridine (Compound No. 32), 3- (2, 3,4-trimethoxy-6-methylbenzoyl) -5-chloro-4-difluoromethyl-2-methoxypyridine (Compound No. 33), 3- (2,3,4-trimethoxy- 6-methylbenzoyl) -5-ethyl-4-trifluoromethyl-2-methoxypyridine (Compound No. 34), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5- Chloro-2-methoxy-4-methylpyridine (Compound No. 35), 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-bromo-2-methoxy-4-methylpyridine (Compound No. 36), 3- (2,3, 4-trimethoxy-6-methylbenzoyl) -4-trifluoromethyl-2-methoxy-5-methylpyridine (Compound No. 37) and 3- (4,5-dimethoxy-2-methylbenzoyl) More preferably, at least one compound selected from the group consisting of -5-chloro-2-methoxy-4-methylpyridine (Compound No. 38) is used. Among these, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-chloro-2-methoxy-4-methylpyridine is most preferred.

Among the compounds represented by the above formula (I-2), 4- (2,3,4-trimethoxy-6-methylbenzoyl) -2,5-dichloro-3-trifluoromethylpyridine (Compound No. 39), 4- (2,3,4-trimethoxy-6-methylbenzoyl) -2-chloro-3-trifluoromethyl-5-methoxypyridine (Compound No. 40), 4- (2,3,4 -Trimethoxy-6-methylbenzoyl) -2-bromo-3-trifluoromethyl-5-methoxypyridine (Compound No. 41), 4- (2,3,4-trimethoxy-6- Methylbenzoyl) -2,3,5-trichloropyridine (Compound No. 42), 4- (2,3,4-trimethoxy-6-methylbenzoyl) -3,5-dichloropyridine (Compound No. 43 ), 4- (2,3,4-trimethoxy-6-methylbenzoyl) -3-chloro-5-methoxypyridine (Compound No. 44), 4- (2,3,4-trimethoxy- 6-methylbenzoyl) -2-bromo-3-chloro-5-methoxypyridine (Compound No. 45) and 4- (2,3,4-trimethoxy-6-methylbenzoyl) -3-bromo Use of at least one compound selected from the group consisting of -5-methylpyridine (Compound No. 46) More preferred. Among these, 4- (2,3,4-trimethoxy-6-methylbenzoyl) -2,5-dichloro-3-trifluoromethylpyridine and 4- (2,3,4-trimethoxy-6 Most preferably, at least one compound selected from the group consisting of -methylbenzoyl) -2-chloro-3-trifluoromethyl-5-methoxypyridine is used.

The fungicide compositions of the present invention are particularly useful as agrohorticultural fungicides. As an agricultural horticultural fungicide, for example, rice ( Oryza sativa, etc.), sesame leaf blight, leaf blight blight; Barley ( Hordeum vulgare , Tricum aestivum, etc.), red mold, rust, snow mold, snow blight, snow blight, leaf blight, bark blight; Sunspot disease, bladder disease, citrus spp., Etc .; Apple ( Malus pumila ) monoliths, white powder, spot deciduous, blackness; Pyrus serotina , Pyrus ussuriensis , Pyrus communis ), black spot, black spot disease; Prunus persica, etc.), blackness, morphosis rot, etc .; Vitis vinifera spp. Such as blackhead disease, bloating disease, powdery mildew, Downy mildew disease; Diospyros kaki et al., anthrax, deciduous disease; Anthracnose, powdery mildew, vine blight, and downy mildew of Cucumis melo ; Rounded pattern disease, leaf fungal disease, late blight of tomato ( Lycopersicon esculentum ); Black spot disease of cress ( Brassica sp., Raphanus sp., Etc.); Potato ( Solanum tuberosum ), plaque, plague; Percent bottle of strawberries ( Fragaria et al.); It is effective in controlling diseases such as gray mold disease and Sclerotinia disease of various crops, but exhibits excellent control effect especially on barley, vegetable white powder bottle and rice blast bottle. In addition, soil diseases caused by plant pathogens such as Fusarium , Pythium , Rhizoctonia , Verticillium , Plasmodiophora , etc. It is also effective for prevention.

The plurality of active ingredients constituting the fungicide composition of the present invention may be mixed with various auxiliary agents in the same manner as conventional pesticide preparations, and include powders, granules, granulating hydrating agents, hydrating agents, aqueous suspending agents, oily suspensions, water soluble agents, and emulsions. Although it is used by formulating in various forms, such as a liquid, a paste, an aerosol, and a microdispersion agent, it can be set as all the formulation forms currently used in the said applicable field as long as it is suitable for the objective of this invention. Auxiliary agents used in the preparation include solid carriers such as diatomaceous earth, slaked lime, calcium carbonate, talc, white carbon, kaolin, bentonite, kaolinite and mixtures of mica, clay, sodium carbonate, soda bicarbonate, manganese, zeolite and starch; Water, toluene, xylene, solvent naphtha, dioxane, acetone, isophorone, methyl isobutyl ketone, chlorobenzene, cyclohexane, dimethyl sulfoxide, dimethylformamide, dimethylacetamide, N-methyl-2-pyrrolidone, Solvents such as alcohols; Fatty acid salt, benzoate, alkyl sulfo succinate, dialkyl sulfosuccinate, polycarboxylate, alkyl sulfate ester salt, alkyl sulfate, alkylaryl sulfate, alkyl diglycol ether sulfate, alcohol sulfate ester salt, alkyl sulfonate, alkyl Aryl sulfonate, aryl sulfonate, lignin sulfonate, alkyl diphenyl ether disulfonate, polystyrene sulfonate, alkyl phosphate ester salt, alkyl aryl phosphate, styryl aryl phosphate, polyoxyethylene alkyl ether sulfate ester salt, polyoxyethylene Anionic surfactants and electrodeposition agents such as alkyl aryl ether sulfates, polyoxyethylene alkyl aryl ether sulfate ester salts, polyoxyethylene alkyl ether phosphates, polyoxyethylene alkyl aryl phosphate ester salts, and salts of naphthalene sulfonic acid formalin condensates; Sorbitan fatty acid ester, glycerin fatty acid ester, fatty acid polyglyceride, fatty acid alcohol polyglycol ether, acetylene glycol, acetylene alcohol, oxyalkylene block polymer, polyoxyethylene alkyl ether, polyoxyethylene alkylaryl ether, polyoxyethylene styryl Nonionic surfactant, such as aryl ether, polyoxyethylene glycol alkyl ether, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene hardened castor oil, polyoxypropylene fatty acid ester B electrodeposition agent; Olive oil, kapok oil, castor oil, palm oil, camellia oil, palm oil, horsetail oil, corn oil, rice bran oil, peanut oil, cottonseed oil, soybean oil, rapeseed oil, linseed oil, kerosene oil, liquid paraffin, and mineral oil. These adjuvants may be selected and used from those known in the art, so long as they do not depart from the object of the present invention. In addition, various auxiliary agents usually used, such as extenders, thickeners, anti-settling agents, cryoprotectants, dispersion stabilizers, weakening agents, and flavoring agents, can be used. The blending ratio of the active ingredient compound with the various adjuvants is generally from 0.005: 99.995 to 95: 5, preferably from 0.2: 99.8 to 90:10. When these formulations are actually used, they may be used as they are, or diluted to a predetermined concentration with a diluent such as water, and various electrodeposition agents may be added and used as necessary.

Also included in the present invention is a method for controlling plant diseases comprising applying the fungicide composition of the present invention to an agricultural horticultural plant. The concentration of the fungicide composition of the present invention varies depending on the target crop, the method of use, the form of the preparation, the dosage, and the like, but cannot be defined uniformly, but in the case of foliage treatment, usually 0.1 to 10,000 ppm per active ingredient, preferably Preferably 1 to 2,000 ppm. In the case of soil treatment, it is usually 10 to 100,000 g / ha, preferably 200 to 20,000 g / ha.

The application of the various formulations of the fungicide composition of the present invention, or diluents thereof, is usually carried out by application methods which are generally carried out, ie, spraying (for example, spraying, spraying, misting, atomizing, granulating, sleeping application, etc.), soil application. (Mixing, irrigation, etc.), surface application (coating, powder coating, etc.), etc. can be performed. It can also be applied by a so-called ultra high concentration and small low dispersion method. In this method, it is possible to contain 100% of the active ingredient.

In the fungicide composition of the present invention, a suitable mixing weight ratio of the benzoylpyridine derivative represented by the formula (I) of (a) or a salt thereof with other fungicides of (b) is generally 1: 10,000 to 10,000: 1, preferably 1: 1,000 to 1,000: 1, more preferably 1: 200 to 200: 1.

<Examples>

Next, although the test example concerning this invention was described, these do not limit this invention.

<Test Example 1>

Wheat powdery mildew prevention test

Wheat (cultivar No. 61) was cultivated in a plastic pot of 7.5 cm in diameter, and when it reached 1.5 blade stage, 10 mL of the mixed chemical liquid in which each compound was adjusted to a predetermined concentration was sprayed to correspond to 1000 L / ha with a spray gun. After the medicine is dried, Erysiphe Conidia spores of graminis ) were sprayed and inoculated and kept in a constant temperature chamber at 20 ° C. 6 to 8 days after the inoculation, the sporulation area was examined, and the incidence rate was determined by the following formula, and the results are shown in Tables 1 to 4. In addition, the average lesion area of an untreated tool was calculated | required by performing the same operation as the process tool except having sprayed water with a spray gun instead of a chemical liquid.

Incidence = (a / b) × 100

a: average lesion area of the treatment zone

b: mean lesion area of untreated area

The theoretical value was calculated by Colby's formula. When the experimental value is lower than the theoretical value, the fungicide composition of the present invention has a synergistic effect with respect to the wheat flour powder prevention effect test. The theoretical value by Colby's formula in such a case was shown together in () of Tables 1-4.

< Test Example  2> cucumber Powder bottle  Preventive effect test

Cucumber (variety: Suyo) was cultivated in the plastic pot of 7.5 cm in diameter, and when it reached 1.5 leaf stage, 10 mL of mixed chemical liquids which adjusted the compound of this invention to predetermined | prescribed density were sprayed with a spray gun. After the chemical liquid was dried, the conidia of spores of Cucumber Sphaerotheca cucurbitae were spray inoculated and kept in a constant temperature chamber at 20 ° C. 9 to 10 days after the inoculation, the area of spore formation was examined and the incidence was determined in the same manner as in Test Example 1, and the results are shown in Tables 5 to 20. The average lesion area of the untreated tool was determined by performing the same operation as that of the treated tool except that water was sprayed instead of the chemical liquid.

In addition, the theoretical value by Colby's formula was shown together in () of Tables 5-20.

Next, although the formulation example of this invention was described, the formulation amount, formulation, etc. in this invention are not limited only to the following formulation example.

<Example 1>

(a) 78 parts by weight of kaolin

(b) 2 parts by weight of a condensate of β-naphthalenesulfonic acid sodium salt with formalin

(c) 5 parts by weight of polyoxyethylene alkylaryl sulfate

15 parts by weight of hydrous amorphous silicon dioxide

A mixture of each of the above components, a compound of formula (I), and pyraclostrobin were mixed at a weight ratio of 8: 1: 1 to obtain a wettable powder.

<Example 2>

(a) 0.5 parts by weight of a compound of formula (I)

(b) 0.5 parts by weight of pyraclostrobin

(c) 20 parts by weight of bentonite

(d) 74 parts by weight of kaolin

(e) 5 parts by weight of lignin sulfonic acid sodium

An appropriate amount of water for granulation was added to each of the above components, mixed and granulated to obtain granules.

<Example 3>

(a) 2 parts by weight of a compound of formula I

(b) 3 parts by weight of pyraclostrobin

(c) 95 parts by weight of talc

Each of the above components was mixed uniformly to obtain a powder.

Claims (12)

(a) a benzoylpyridine derivative represented by the formula (I) or a salt thereof, and (b) pyraclostrobin, boscalid, penthiopyrad, pyribencarb, meptyldinocap, difenokazole, dodine, sulfur, fluti Ani, containing at least one fungicide selected from the group consisting of 6-t-butyl-8-fluoro-2,3-dimethylquinolin-4-yl acetate and the compound represented by the formula (II) as an active ingredient A fungicide composition, characterized in that.
<Formula I>

[Wherein A is -N =, B is -CX ⁴ =; When A is -CH =, B is -N =; X ¹ and X ² are each independently a halogen atom, an alkoxy group, a hydroxyl group, an alkyl group, a CF ₃ group or an alkylthio group; X ³ is a hydrogen atom, a halogen atom, an alkoxy group, an alkyl group, a CF ₃ group or an alkylthio group; X ⁴ is a hydrogen atom, a halogen atom, an alkoxy group, an alkyl group, a CF ₃ group or an alkylthio group; R ¹ is an alkyl group; R ^{2 '} is an alkoxy group; p is 0, 1 or 2; R ^{2 ''} and R ^{2 '''} are each an alkoxy group]
<Formula II>

The fungicide of claim 1, wherein the fungicide of (b) consists of pyraclostrobin, boscalid, penthiopyrad, pyribencarb, meptyldinocap, difenocazole, dodine, sulfur and a compound represented by formula (II). At least one fungicide composition selected from the group.
<Formula II>

The compound according to claim 1, wherein the fungicide of (b) is composed of pyraclostrobin, boscalid, penthiopyrad, pyribencarb, meptyldinocap, difenokazole, sulfur and a compound represented by formula (II). At least one selected fungicide composition.
<Formula II>

The fungicide composition according to claim 1, wherein the benzoylpyridine derivative is a compound represented by the formula (I-1).
<Formula I-1>

[Wherein, X ¹ and X ² are each independently a halogen atom, an alkoxy group, a hydroxyl group, an alkyl group, a CF ₃ group or an alkylthio group; X ³ is a hydrogen atom, a halogen atom, an alkoxy group, an alkyl group, a CF ₃ group or an alkylthio group; R ¹ is an alkyl group; R ^{2 '} is an alkoxy group; p is 0, 1 or 2; R ^{2 ''} and R ^{2 '''} are each an alkoxy group] The method of claim 4, wherein the benzoylpyridine derivative is 3- (2,3,4-trimethoxy-6-methylbenzoyl) -4-bromo-5-chloro-2-methoxypyridine, 3- (2,3 , 4-trimethoxy-6-methylbenzoyl) -5-chloro-4-ethyl-2-methoxypyridine, 3- (4,5-dimethoxy-2-methylbenzoyl) -4,5-dichloro-2 -Methoxypyridine, 3- (5-ethoxy-4-methoxy-2-methylbenzoyl) -4,5-dichloro-2-methoxypyridine, 3- (2,3,4-trimethoxy-6 -Methylbenzoyl) -4-bromo-5-chloro-2-ethoxypyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-chloro-2-ethoxy-4- Methylpyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-bromo-4-chloro-2-ethoxypyridine, 3- (2,3,4-trimethoxy- 6-methylbenzoyl) -4-chloro-5-iodo-2-methoxypyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-iodo-2,4-dimeth Methoxypyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-chloro-2-methoxy-4-methylthiopyridine, 3- (2,3,4-trimethoxy- 6-methylbenzoyl) -5-chloro-2,4-dimethoxy Lidine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -4,5-dibromo-2-methoxypyridine, 3- (2,3,4-trimethoxy-6- Methylbenzoyl) -4-bromo-2-methoxy-5-methylpyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-bromo-4-trifluoromethyl- 2-methoxypyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -4,5-dichloro-2-methoxypyridine, 3- (2,3,4-trimethoxy- 6-methylbenzoyl) -2,4-dichloro-5-methylpyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -2,4-dichloro-5-iodopyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -2-fluoro-4-iodo-5-methylpyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) 2-fluoro-4,5-dimethylpyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -2-methoxy-4,5-dimethylpyridine, 3- (2-in Methoxy-3,4-dimethoxy-6-methylbenzoyl) -2-ethoxy-4,5-dimethylpyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -4,5- Dimethyl-2-methylthiopyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5- Bromo-4-chloro-2-methoxypyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -4-chloro-2-methoxy-5-methylpyridine, 3- (2 , 3,4-trimethoxy-6-methylbenzoyl) -2-chloro-5-trifluoromethyl-4-methylpyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl)- 5-trifluoromethyl-2-methoxy-4-methylpyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -2,4-dichloro-5-trifluoromethylpyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -4-chloro-5-trifluoromethyl-2-methoxypyridine, 3- (2,3,4-trimethoxy-6 -Methylbenzoyl) -5-chloro-4-ethynyl-2-methoxypyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-chloro-4-fluoromethyl-2 -Methoxypyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-bromo-4-fluoromethyl-2-methoxypyridine, 3- (2,3,4- Trimethoxy-6-methylbenzoyl) -4-fluoromethyl-2-methoxy-5-methylpyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-chloro-4 Difluorome 2-methoxypyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-ethyl-4-trifluoromethyl-2-methoxypyridine, 3- (2,3, 4-trimethoxy-6-methylbenzoyl) -5-chloro-2-methoxy-4-methylpyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-bromo- 2-methoxy-4-methylpyridine, 3- (2,3,4-trimethoxy-6-methylbenzoyl) -4-trifluoromethyl-2-methoxy-5-methylpyridine and 3- (4 A fungicide composition, which is at least one member selected from the group consisting of, 5-dimethoxy-2-methylbenzoyl) -5-chloro-2-methoxy-4-methylpyridine. The fungicide composition according to claim 1, wherein the benzoylpyridine derivative is a compound represented by the formula (I-2).
<Formula I-2>

[Wherein, X ¹ and X ² are each independently a halogen atom, an alkoxy group, a hydroxyl group, an alkyl group, a CF ₃ group or an alkylthio group; X ³ is a hydrogen atom, a halogen atom, an alkoxy group, an alkyl group, a CF ₃ group or an alkylthio group; X ⁴ is a hydrogen atom, a halogen atom, an alkoxy group, an alkyl group, a CF ₃ group or an alkylthio group; R ¹ is an alkyl group; R ^{2 '} is an alkoxy group; p is 0, 1 or 2; R ^{2 ''} and R ^{2 '''} are each an alkoxy group] 7. The compound of claim 6 wherein the benzoylpyridine derivative is 4- (2,3,4-trimethoxy-6-methylbenzoyl) -2,5-dichloro-3-trifluoromethylpyridine, 4- (2,3, 4-trimethoxy-6-methylbenzoyl) -2-chloro-3-trifluoromethyl-5-methoxypyridine, 4- (2,3,4-trimethoxy-6-methylbenzoyl) -2- Bromo-3-trifluoromethyl-5-methoxypyridine, 4- (2,3,4-trimethoxy-6-methylbenzoyl) -2,3,5-trichloropyridine, 4- (2, 3,4-trimethoxy-6-methylbenzoyl) -3,5-dichloropyridine, 4- (2,3,4-trimethoxy-6-methylbenzoyl) -3-chloro-5-methoxypyridine, 4- (2,3,4-trimethoxy-6-methylbenzoyl) -2-bromo-3-chloro-5-methoxypyridine and 4- (2,3,4-trimethoxy-6-methyl A fungicide composition, which is at least one compound selected from the group consisting of benzoyl) -3-bromo-5-methylpyridine. The compound of claim 1, wherein the benzoylpyridine derivative is 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-chloro-2-methoxy-4-methylpyridine, 4- (2,3, 4-trimethoxy-6-methylbenzoyl) -2,5-dichloro-3-trifluoromethylpyridine and 4- (2,3,4-trimethoxy-6-methylbenzoyl) -2-chloro-3 A fungicide composition which is at least one compound selected from the group consisting of -trifluoromethyl-5-methoxypyridine. The fungicide composition according to claim 8, wherein the benzoylpyridine derivative is 3- (2,3,4-trimethoxy-6-methylbenzoyl) -5-chloro-2-methoxy-4-methylpyridine. 9. The benzoylpyridine derivative of claim 8 wherein the benzoylpyridine derivative is 4- (2,3,4-trimethoxy-6-methylbenzoyl) -2,5-dichloro-3-trifluoromethylpyridine and 4- (2,3, A fungicide composition which is at least one compound selected from the group consisting of 4-trimethoxy-6-methylbenzoyl) -2-chloro-3-trifluoromethyl-5-methoxypyridine. The fungicide composition according to claim 1, wherein the mixed weight ratio of the benzoylpyridine derivative or salt thereof (a) and the active-enhancing component of (b) is 1: 10,000 to 1,000: 1. A method for controlling plant diseases, comprising applying the fungicide composition of claim 1 to a plant.